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R: Comment out block of code [duplicate]
I want to comment out several lines of code in R. Is there any way of doing it without having to put a # before each line - sort of like /* blocked out code */ in SAS?
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console.writeline and System.out.println
...xactly is the technical difference between console.writeline and System.out.println ?
I know that System.out.println writes to standard output but is this not the same thing as the console?
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Do you leave parentheses in or out in Ruby? [closed]
When possible.. do you leave parentheses in or out in Ruby?
9 Answers
9
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How to run Rake tasks from within Rake tasks?
...
If you need the task to behave as a method, how about using an actual method?
task :build => [:some_other_tasks] do
build
end
task :build_all do
[:debug, :release].each { |t| build t }
end
def build(type = :debug)
# ...
end
If you'd rather stick to rake's idiom...
String.format() to format double in java
... Yes, Matt is right. %1, %2 and so on can be used to re-order the output based on the index of your input arguments. See this. You can omit the index and the default order will be assumed by the formatter.
– praneetloke
May 14 '16 at 16:06
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How to redirect cin and cout to files?
How can I redirect cin to in.txt and cout to out.txt ?
5 Answers
5
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Retrieve column names from java.sql.ResultSet
... while (i < columns.getColumnCount()) {
i++;
System.out.print(columns.getColumnName(i) + "\t");
columnNames.add(columns.getColumnName(i));
}
System.out.print("\n");
while (rs.next()) {
for (i = 0; i < columnNames.size(); i++) {
...
Get first n characters of a string
... "hellip" - took me sometime to understand we were not talking about satan's ip adress
– Lucas Bernardo de Sousa
Mar 27 '15 at 13:49
2
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Why doesn't Java allow overriding of static methods?
...concern with performance: there had been a lot of criticism of Smalltalk about it being too slow (garbage collection and polymorphic calls being part of that) and Java's creators were determined to avoid that. Another was the decision that the target audience for Java was C++ developers. Making stat...
Changing Java Date one hour back
...ter has the new java.time framework built-in.
Instant
If you only care about UTC (GMT), then use the Instant class.
Instant instant = Instant.now ();
Instant instantHourEarlier = instant.minus ( 1 , ChronoUnit.HOURS );
Dump to console.
System.out.println ( "instant: " + instant + " | instantHo...